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Pempheridae
Sweepers are small, tropical marine (occasionally brackish) perciform fish of the family Pempheridae. Found in the western Atlantic Ocean and Indo-Pacific region, the family contains about 26 species in two genera. One species (''Pempheris xanthoptera'') is the target of subsistence fisheries in Japan, where the fish is much enjoyed for its taste. Sweepers are occasionally kept in marine aquaria. Description Deeply keeled, compressed bodies and large eyes typify sweepers, their form somewhat like hatchetfish; both cycloid and ctenoid scales may be present. The small, short dorsal fin begins before the body's midpoint and may have four to seven spines; the anal fin is extensive and usually has three spines. The mouth is subterminal and strongly oblique. Species of the genus ''Parapriacanthus'' have much more cylindrical bodies. Some species possess photophores. All but the curved sweeper (''Pempheris poeyi'') possess a gas bladder. The largest species is the common bull ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pempheris
''Pempheris'' is a genus of sweepers native to the Atlantic, Indian and Pacific Ocean. Species There are currently more than 70 recognized species in this genus: * '' Pempheris adspersa'' Griffin, 1927 (New Zealand bigeye) * '' Pempheris adusta'' Bleeker, 1877 (Dusky sweeper) * ''Pempheris affinis'' McCulloch, 1911 (Black-tipped sweeper) * ''Pempheris analis'' Waite, 1910 (Bronze sweeper) * ''Pempheris andilana'' J. E. Randall & Victor, 2015 * ''Pempheris argyrea'' J. E. Randall & Victor, 2015 * ''Pempheris bexillon'' Mooi & J. E. Randall, 2014Mooi, R.D. & Randall, J.E. (2014)''Pempheris bexillon'', a new species of sweeper (Teleostei: Pempheridae) from the Western Indian Ocean.''Zootaxa, 3780 (2): 388–398.'' * ''Pempheris bineeshi'' J. E. Randall & Victor, 2015 * ''Pempheris bruggemanni'' J. E. Randall & Victor, 2015 * ''Pempheris compressa'' ( J. White, 1790) (Small-scale sweeper) * ''Pempheris connelli'' J. E. Randall & Victor, 2015 * ''Pempheris convexa'' J. E. Ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parapriacanthus
''Parapriacanthus'' is a genus of sweepers native to the Indian Ocean and the western Pacific Ocean. ''Parapriacanthus'' are bioluminescent, with ventral light organs for counter-illumination. ''Parapriacanthus'' luciferase is a kleptoprotein, obtained from their diet on bioluminescent ostracods. Species There are currently 11 recognized species in this genus: * ''Parapriacanthus argenteus'' (Cecil von Bonde, von Bonde, 1923) * ''Parapriacanthus darros'' John Ernest Randall, J. E. Randall & Sergey Vasilievich Bogorodsky, Bogorodsky, 2016 * ''Parapriacanthus dispar'' (Albert William Herre, Herre, 1935) (Deep bullseye) * ''Parapriacanthus elongatus'' (Allan Riverstone McCulloch, McCulloch, 1911) (Slender bullseye) * ''Parapriacanthus guentheri'' (Carl Benjamin Klunzinger, Klunzinger, 1871) * ''Parapriacanthus kwazulu'' John Ernest Randall, J. E. Randall & Sergey Vasilievich Bogorodsky, Bogorodsky, 2016 * ''Parapriacanthus marei'' Pierre Fourmanoir, Fourmanoir, 1971 (Red-fin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perciform
Perciformes (), also called the Percomorpha or Acanthopteri, is an order (biology), order or superorder of Actinopterygii, ray-finned fish. If considered a single order, they are the most numerous order of vertebrates, containing about 41% of all bony fish. Perciformes means "perch-like". Perciformes is an Order (biology), Order within the Clade Percomorpha consisting of "perch-like" Percomorphans. This group comprises over 10,000 species found in almost all aquatic ecosystems. The order contains about 160 families, which is the most of any order within the vertebrates. It is also the most variably sized order of vertebrates, ranging from the ''Schindleria brevipinguis'' to the marlin in the genus ''Makaira''. They first appeared and diversified in the Late Cretaceous. Among the well-known members of this group are perch and darters (Percidae), sea bass and groupers (Serranidae). Characteristics The Fish anatomy#Fins, dorsal and Fish anatomy#Fins, anal fins are divided into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pempheris Multiradiata
''Pempheris multiradiata'', the bigscale bullseye, large-scaled bullseye or common bullseye, is a species of marine ray-finned fish, a sweeper from the family Pempheridae which is found in the coastal waters of southern Australia. Description ''Pempheris multiradiata'' has a large eye and a large oblique mouth. It has a deep, compressed body which tapers, steeply towards the tail. It has a high dorsal fin with a short base and a long based anal fin, the fin bases being scaled. It has large eyes. The body is covered in large scales which are weakly attached to the skin. In colour this is a pale to dark purplish-brown species, it can be silvery on the belly. It has 8–10 darker horizontal stripes along the flanks, and dark coloured fins. As juveniles they are mainly translucent tinged with bronze to yellowish on the back, the dorsal fin has a black leading edge, the tip of the anal fin is black and the pelvic fins are yellow and have black tips. The dorsal fin has 5 spines and 11 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pempheris Poeyi
''Pempheris poeyi'', the curved sweeper and shortfin sweeper, is a species of marine ray-finned fish, a sweeper in the family Pempheridae from the western Atlantic Ocean. Description ''Pempherus poeyi'' has a moderately deep, highly compressed body with a straight dorsal profile. It has relatively large eyes and a large oblique mouth. They have 4-5 spines and 8-9 soft rays in their dorsal fins while there are 3 spines, and 22-24 soft rays in the anal fin. They vary in colour from light yellowish brown, slightly duskier dorsally, to blackish on entire upper flanks and tail. There is a horizontal indistinct darkish band along the flanks. It attains a maximum length of standard length and total length. Distribution ''Pempheris poeyi'' live in the Western Atlantic. This includes the Caribbean Sea, the Lesser Antilles, Colombia, and the island of Bermuda. Habitat and biology ''Pempheris poeyi'' is nocturnal and spends the day in schools in caves, under ledges, or among dense b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franz Steindachner
Franz Steindachner (11 November 1834 in Vienna – 10 December 1919 in Vienna) was an Austrian Zoology, zoologist, ichthyologist, and herpetologist. He published over 200 papers on fishes and over 50 papers on reptiles and amphibians. Steindachner described hundreds of new species of fish and dozens of new amphibians and reptiles. At least seven species of reptile have been named after him. Work and career Being interested in natural history, Steindachner took up the study of fossil fishes on the recommendation of his friend Eduard Suess (1831–1914). In 1860 he was appointed to the position of director of the fish collection at the Naturhistorisches Museum, a position which had remained vacant since the death of Johann Jakob Heckel (1790–1857). (in German). Steindachner's reputation as an Ichthyology, ichthyologist grew, and in 1868 he was invited by Louis Agassiz (1807–1873) to accept a position at the Museum of Comparative Zoology at Harvard University. Steindachner took ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estuary
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environments and are an example of an ecotone. Estuaries are subject both to marine influences such as tides, waves, and the influx of saline water, and to fluvial influences such as flows of freshwater and sediment. The mixing of seawater and freshwater provides high levels of nutrients both in the water column and in sediment, making estuaries among the most productive natural habitats in the world. Most existing estuaries formed during the Holocene epoch with the flooding of river-eroded or glacially scoured valleys when the sea level began to rise about 10,000–12,000 years ago. Estuaries are typically classified according to their geomorphological features or to water-circulation patterns. They can have many different names, such as bays, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zooplankton
Zooplankton are the animal component of the planktonic community ("zoo" comes from the Greek word for ''animal''). Plankton are aquatic organisms that are unable to swim effectively against currents, and consequently drift or are carried along by currents in the ocean, or by currents in seas, lakes or rivers. Zooplankton can be contrasted with phytoplankton, which are the plant component of the plankton community ("phyto" comes from the Greek word for ''plant''). Zooplankton are heterotrophic (other-feeding), whereas phytoplankton are autotrophic (self-feeding). This means zooplankton cannot manufacture their own food but must eat other plants or animals instead — in particular they eat phytoplankton. Zooplankton are generally larger than phytoplankton, most are microscopic, but some (such as jellyfish) are macroscopic and can be seen with the naked eye. Many protozoans (single-celled protists that prey on other microscopic life) are zooplankton, including zooflagellates, fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bigeye
The Priacanthidae, the bigeyes, are a family of 18 species of marine ray-finned fishes. " Catalufa" is an alternate common name for some members of the Priacanthidae. The etymology of the scientific name (, to bite + , thorn) refers to the family's very rough, spined scales. The common name of "bigeye" refers to the member species' unusually large eyes, suited to their carnivorous and nocturnal lifestyles. Priacanthidae are typically colored bright red, but some have patterns in silver, dusky brown, or black. Most species reach a maximum total length of about , although in a few species lengths of over are known. Most members of this family are native to tropical and subtropical parts of the Indian and Pacific Oceans, but four species (''Cookeolus japonicus'', ''Heteropriacanthus cruentatus'', ''Priacanthus arenatus'', and ''Pristigenys alta'') are found in the Atlantic. They tend to live near rock outcroppings or reefs, although a few are known to inhabit open waters. Many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardinalfish
Cardinalfishes are a family, Apogonidae, of ray-finned fishes found in the Atlantic, Indian, and Pacific Oceans; they are chiefly marine, but some species are found in brackish water and a few (notably ''Glossamia'') are found in fresh water. A handful of species are kept in the aquarium and are popular as small, peaceful, and colourful fish. The family includes about 370 species. They are generally small fish, with most species being less than , and are often brightly coloured. They are distinguished by their large mouths, and the division of the dorsal fin into two separate fins. Most species live in tropical or subtropical waters, where they inhabit coral reefs and lagoons. They are nocturnal, spending the day in dark crevices within the reef. At least some species brood their eggs inside the mouths of the males. Males do not feed during this incubation period. Males incubate the eggs in their mouth due to having longer heads and a larger jaw, which females do not acquire.Hoey ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reef
A reef is a ridge or shoal of rock, coral or similar relatively stable material, lying beneath the surface of a natural body of water. Many reefs result from natural, abiotic processes— deposition of sand, wave erosion planing down rock outcrops, etc.—but there are also reefs such as the coral reefs of tropical waters formed by biotic processes dominated by corals and coralline algae, and artificial reefs such as shipwrecks and other anthropogenic underwater structures may occur intentionally or as the result of an accident, and sometimes have a designed role in enhancing the physical complexity of featureless sand bottoms, to attract a more diverse assemblage of organisms. Reefs are often quite near to the surface, but not all definitions require this. Earth's largest coral reef system is the Great Barrier Reef in Australia, at a length of over . Biotic There is a variety of biotic reef types, including oyster reefs and sponge reefs, but the most massive and widely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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